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Carbon Nanotubes in Liquid Suspension with Electric Fields and Shear Flow

Categories: Laboratory for Surface Modification (LSM)
Speaker: Jerry W. Shan, Rutgers MAE
Date & Time: October 22, 2009 - 12:00pm
Location: Chem. 260

Carbon nanotubes are polarizable particles, and, as such, can be manipulated with external electric fields. As a result, liquid suspensions of carbon nanotubes offer a simple and highly controllable system for exploring the nanoscale hydrodynamics of rotating nanotubes, as well as the macroscopic electrorheological consequences of field-induced nanotube alignment and self-assembly. We describe our investigations of the flow resistance of individual single-wall carbon nanotubes (in collaboration with F. Zimmermann of Physics & Astronomy), as well as the particle orientation and shear viscosity of dilute suspensions of single-wall nanotubes under simultaneous shear flow and electric fields. We also briefly introduce our related efforts to develop carbon-nanotube-based "smart" heat-transfer fluids having enhanced, directional, and actively controllable thermal conductivities, as well as composite materials with aligned nanotubes for water-filtration purposes.

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